Ontology highlight
ABSTRACT:
PROVIDER: PRJNA1065644 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR27587400_1.fastq.gz | Fastqsanger.gz | |||
| SRR27587400_2.fastq.gz | Fastqsanger.gz | |||
| SRR27587401_1.fastq.gz | Fastqsanger.gz | |||
| SRR27587401_2.fastq.gz | Fastqsanger.gz | |||
| SRR27587396_1.fastq.gz | Fastqsanger.gz |
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Project description:Salt stress has become one of the main abiotic stress factors restricting agricultural production worldwide. Sweet sorghum is an important salt and drought tolerant feed and energy crop. Its salt tolerance mechanism has not been widely studied. With the development of transcriptome sequencing technology, it is possible to study the molecular mechanism of sweet sorghum salt tolerance. The purpose of this study was to further reveal the potential salt-tolerant molecular mechanisms of sweet sorghum through high-throughput sequencing analysis of the transcriptome. Finally, through high-throughput sequencing, we read approximately 54.4G of raw base and 53.7G of clean base in total, and used FastQC to assign a quality score (Q) to each base in the read using a similar phred algorithm, Analysis shows that the data is highly credible. We conclude that RNA-based transcriptome characterization will accelerate the study of genetics and molecular biology of sweet sorghum salt tolerance mechanisms and provide a framework for this.
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Project description:The N6-methyladenosine (m6A) modification is the most common internal post-transcriptional modification, with important regulatory effects on RNA export, splicing, stability，and translation. However, the effects of m6A modifications on the resistance of sweet sorghum to salt stress remain unclear. In this study, we mapped the m6A modifications in two sorghum inbred lines (salt-tolerant M-81E and salt-sensitive Roma) that differ regarding salt tolerance. Dynamic changes to m6A modifications in sweet sorghum were identified in response to salt stress. Our data suggest that the differences in the m6A modifications between salt-tolerant and salt-sensitive sweet sorghum might contribute to the diversity in salt tolerance.
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Project description:The Fusarium incarnatum strain K23, originally isolated from a habit-adapted wild plant Thapsia species, colonized the roots and shoots of tomato seedlings and protected them against salt stress. Comparison of expression and metabolite profile changes uncovered that the fungus completely reprogramed the tomato response to salt stress. Barely any overlap was observed among the genes and metabolites which are regulated by salt stress in uncolonized and colonized tomato seedlings. In colonized seedlings exposed to salt stress, less stress- related genes are activated than in un-colonized seedlings. Furthermore, K23 produced gibberellin and gibberellin-responsive genes were detected in all RNA samples. Our analysis demonstrates that K23 colonisation completely alters the salt-responsive gene and metabolite profiles in tomato seedlings.
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Project description:To screen genes related to the development of sweet potato tuberous roots, the high throughput sequencing of different stages of sweet potato tuberous roots was performed. The fibrous roots (FR; roots at 20 dap), developing tuberous roots (DR; roots at 60 dap) and mature tuberous roots (MR; roots at 120 dap) of Ipomoea batatas (L.) Taizhong 6 and MBP3 overexpressed lines were used for transcriptome analysis. Totally, we identified 5488 differentially expressed genes between different stage tuberous roots of Taizhong6 and 14312 differentially expressed genes between the tuberous roots of Taizhong6 and MBP3 overexpressed lines, by calculating the gene FPKM in each sample and conducting differential gene analysis. This study provides a foundation for the mechanism analysis of sweet potato tuberous root development.
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Project description:Two complementary protein extraction methodologies coupled with an automated proteomic platform were employed to analyze tissue-specific proteomes and characterize biological and metabolic processes in sweet potato. A total of 74,255 peptides corresponding to 4,321 nonredundant proteins were successfully identified. Data were compared to predicted protein accessions for Ipomea species and mapped on the sweet potato transcriptome and haplotype-resolved genome. A proteogenomics analysis successfully mapped 12,902 peptides against the transcriptome or genome, representing 90.4% of the total 14,275 uniquely identified peptides, predicted 741 new protein-coding genes, and specified 2726 loci where annotations can be further improved. Overall, 39,916 peptides mapped to 3,143 unique proteins in leaves, and 34,339 peptides mapped to 2,928 unique proteins in roots; 32% and 27% unique identified proteins were leaves- and roots-specific, respectively.
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Project description:Soil salinity (Salt) is one of the major limiting factors of Leymus chinensis (named sheepgrass) performance and alters their primary metabolic process and gene expression. Salt stress could accelerate inhibitive effects concomitant with low light (LL-Salt). However, little is known about physiological and molecular mechanisms under such LL-Salt in sheepgrass. This study aims to uncover the key reprogrammed metabolic pathways induced by LL-Salt through an integrated analysis of transcriptome and metabolism. Plant seedlings were exposed to six combinations of light intensity (moderate light, ML, and LL) and NaCl concentrations (0, 50, and 200mM) for 20 days. Results suggest that the growth of sheepgrass seedlings was dramatically inhibited with severe lodging phenotype, especially when exposed to LL-Salt combined conditions. Activities of an antioxidant enzyme, catalase, were significantly increased in LL but significantly decreased in salt stress, leading to a reverse pattern for H2O2 in LL and salt stress. Transcriptome analysis reveals 4921 downregulated differentially expressed genes (DEGs) with carbon metabolism pathways were significantly enriched compared to light response without salt (ML_0 vs LL_0). There are 194 overlapped downregulated DEGs induced by two salt treatments (ML_50 vs ML_0 and ML_200 vs ML_0), where the carbon metabolism pathway was also significantly enriched. In terms of interactive effects of LL-Salt treatments, we found that there are 16 overlapped DEGs, including a phytochrome-interacting transcription factor 4 (PIF4) with upregulation in LL treatment while downregulation in salt treatment, which was validated by qPCR.Collectively, we found that serval antioxidant redox pathways, including photorespiration, GSG/GSSH redox, and ABA signaling, participated in response to LL and salt combined events and highlighted the roles of cellular redox homeostasis in LL-Salt response in sheepgrass.
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Project description:Ice plant (Mesembryanthemum crystallinum L.) is a halophyte and an inducible CAM plant. Ice plant seedlings exhibit moderate salt tolerance, with root growth unaffected by 200 mM NaCl treatments, while hypocotyl elongation is hindered in salt-stressed etiolated seedlings. Superoxide anion accumulation was prominent in cotyledons and primary leaves but decreased in root tissues over time but was not significantly affected by salt treatment. Hydrogen peroxide (H2O2) levels surged initially in both control and salt-treated seedlings, with higher and more persistent H2O2 levels in salt-treated seedlings, indicating salt-induced ROS accumulation, especially in etiolated seedlings. An RNA-seq analysis of etiolated seedlings revealed 6,326 unigenes (about 8%) showing more than a four-fold change in expression after a 6-h 200 mM NaCl treatment. The top GO terms for 4-fold upregulated DEGs in the Molecular Function category included “cation binding,” “metal ion binding,” “oxidoreductase activity,” “monooxygenase activity,” and “antioxidant activity.” The top GO terms for 4-fold down-regulated DEGs in the Biological Process category included “metabolic process”, “cellular metabolic process”, and “biosynthetic process”. Upregulated genes were primarily linked to ion transport and stress responses and downregulated genes to growth processes like ribosomal protein synthesis and cell wall formation. This indicates that salt stress hinders growth but enhances ion homeostasis and stress response mechanisms. For class III peroxidase family genes, 14 out of 53 identified transcripts met the criteria for differentially expressed genes. Quantitative RT-PCR confirmed that the expression of McPrx4.1, McPrx12.1, and McPrx12.3 increased, while the expression of McPrx60.3 decreased. We suggest distinct roles for individual class III peroxidase members in the trade-offs between plant growth and stress response. Unveiling these responses will advance our understanding of the growth–stress balance in the intrinsic salt tolerance in halophytes.
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